Would it be possible to retro credit from before enrollment? Or is retro credit only possible for the max time listed, but only from date of enrollment?

http://en.aegeanair.com/milesandbonu...ms-conditions/

MILES ACCRUAL FROM STAR-ALLIANCE FLIGHTS:
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Each member-passenger must indicate his/her Account Number when reserving an airline ticket, and present the Card at check-in. Otherwise proper registration of the Miles will not be possible. Ticket coupons or receipts, boarding passes, and/or any other relevant documentary evidence should be retained by the Member until the Miles attributable to the Star Alliance flights appear in his/her account. AEGEAN may, at its discretion, determine whether the documents submitted by the Member constitute sufficient proof or not.
In the event that earned Miles do not appear in the Account one working day following the flight event, please fill out the online request form to retroactively claim the flight’s miles (through the Online Miles&Bonus Account Management on AEGEAN’s website, www.aegeanair.com). The application is processed by Aegean within 14 calendar days from its submission, while the corresponding miles will be credited to the Member's Account after two (2) weeks, at the latest, upon a reply from the Star Alliance member-carrier that executed the flight in question. Existing Miles&Bonus members can claim their miles retroactively for flights that took place up to 12 months prior to their retro-claim request (exception: Air New Zealand, LOT Polish, South Africa Airways and TAP Portugal, for which retro-claim is viable for flights taken place up to 6 months prior to retro-claim request)